Gas-cock.



J. H. IVICMURRAY.

' GAS cocK.

APPLICATION FILED AUG.20, 1914.

113922Q8 Patented May 11, 1915.

UNTED 'STATES JOHNH. MCMURRAY, OF

VPATENT OFFICE.

SCHENECTADY, NEW-YOR'K, ASSIGNR OF ONE-HALF TO JOHN' T. GORMAN, OFCOHOIES,` NEW YORK:

Gas-cock.

Application led August 20, 1914. Serial N o. 857,794.

-to provide a gas cock of the type stated which shall be simple andpractical in its structural nature, readily operated to open position,and automatically locked in closed' position.

With the above and other objects in view,

the invention consists in the novel features of structure, relation andcombination which will be particularly pointed out as the de. scriptionproceeds.

An embodiment of the invention is illustrated in the accompanyingdrawings Wherein:-

Figure 1 is a front Velevation ofthe gas c ock in whichthe features of'the invention are incorporated. Fig. 2 is a top plan View thereof. Fig3 isa side elevation thereof, partly in longitudinal section. Fig.l 4 isa longitudinal sectional view thereof s howing.`

the locking element 'in position to release the plug. Fig. 5 is ahorizontal section on the finger 11 1s moved from the notch 9 the line 55 of Fig. 4, and Fig. 6 is a detail perspective view of the locking key.Similar characters .of reference designate corresponding partsthroughout the several views. f ,The gas cock shown.is'ofthe'usualtrning plug type and includes the casing 1 hav` lng an inletconnection 2 and an outletconnection 3. The casing-1 has -the usualtapered bore intersecting.. thev connectionsv 2 Iand 3 andprovided'tolreceive aturning plug-4 of the usual;form.` The turning plug4 has'at its upper end and beyond the cas ing 1, a head which carries anoperating handle 6.

The casing 1 is provided nearits upperl '-bya stop pin 19 located underand at one end onits inner 4face with an annular. chan nel .7 which isoverhung by a iiange 8, the

. Specification of Lett-ers Patent.

Patented May 11, 1915.

a notch or recess 9 communicating with the channel'7 and extending totheupper face of the casing 1. The plug 4 is locked in closed position by akey 10 which is provided with a laterally projecting finger 11 and.below thefinger 11 with a centering extension 12. The key 10 isiittedin a recess 13 which extends to the circumferential face ofthehead 5 and'I it'sextension '12 is fitted ina bore 14 arrangedcentrally and axially of the plug 4 andbelow the recess 13.A The /recess13 corresponds in width to the width golf the key 10 and communicateswith an enlarged recess or socket 15 extending to the upper face of thehead 5 andarranged centrally and axially thereof. The key 10 carriesatvits upper end an'operating knob or button 16 whichv has 'a somewhatsnugv fit inthe recess 15 but is of less depth than said recess. The key10 is urged upwardly by a suitable spring, preferably an lexpansion coilspring 17 which is arranged in v`the recess or socket l5, under thebutton 16 and' which bears against the base of said recess or socket andtheA under face of said button. In the closed position of theplug 4, thekey v10 is elevated by the spring 17 and its finger 11 engages in thenotch 9, as l,shownin Fig. 3. By virtue of the engagement of the finger11 in the key 10 of t e notch'9, the plug 4 is positively locked in itsclosed position. To move the plug 4 to open position, it is firstnecessary to depress thekey 10. For this purpose, the button 16 ispressed downwardly by the thumb and position -isprevented by a stop pin18 which projeetsfinto'thechannel17 and whichvis engaged-by the vnger 11when thekey comes intok itasfull,l open position. When it is de`siredito closethe plug, it is turned in the usual manner and when itreaches its closed j position, the finger 11 alines with the notch 9,-yat whichtime, the spring 17 acting on side of-thenotch- 9 andwhich isengaged by thefinger 11 when the key comes to its closed position.

its upper end an axially located recess With which` said lateral recesscommunicates and having an axially located bore projecting downwardlyfrom said lateral recess, the casing having its inner face provided nearits upper end With a circumferential channel and having a flangeoverhanging said channel and provided With a notch extend- Lieaaoa ingbctween'said channel and the upper face of the casing, a keymounted insaid lateral recess for sliding movement in the direction of the axis ofthe casing and having a laterally projecting nger formedl to engage insaid notch, the key also having below said 'finger a centering extensionwhich engages in said bore, an operating button secured to the upper endof the key and arranged inv said axially located recess and an expansivespring also arranged in said axially located recess under said operatingbutton and engaging the same.

In testimony whereof 'I have hereunto set my hand in presence of twosubscribing Witnesses.

JOHN H. MCMURRAY.

Witnesses: v

CARLOS EVANS, WALTER D. GoonALE.

